- combustion of a fuel-air mixture without spark. In the diesel engine, air is drawn into the cylinder and compressed to a temperature sufficiently high that fuel oil injected at the end of the compression stroke burns in the cylinder without a spark to initiate combustion. A prank played on new employees is to send them on a search for the spark plugs for a diesel engine -- they don't exist.
Dictionary of automotive terms. 2015.
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compression ignition — compression ignition, adj. ignition of engine fuel by the heat of air compressed in the cylinders into which the fuel is introduced. [1925 30] * * * … Universalium
compression ignition — noun : ignition in an internal combustion engine in which the necessary high temperature is produced by compressing air in the cylinder before admission of the fuel (as in a diesel engine) compression ignition engine * * * compression ignition,… … Useful english dictionary
compression-ignition engine — noun An internal combustion engine in which ignition of the liquid fuel injected into the cylinder is performed by the heat of compression of the air charge • • • Main Entry: ↑compress … Useful english dictionary
Homogeneous charge compression ignition — Thermodynamics … Wikipedia
Homogeneous Charge Compression Ignition — Homogeneous Charge Compression Ignition, or HCCI, is a form of internal combustion in which well mixed fuel and oxidizer (typically air) are compressed to the point of auto ignition. As in other forms of combustion, this exothermic reaction… … Wikipedia
Homogeneous charge compression ignition — Moteur HCCI Pour les articles homonymes, voir HCCI. Le moteur Homogeneous Charge Compression Ignition, ou HCCI, est un type de moteur à combustion interne dans lequel le mélange air carburant est mélangé de la manière la plus homogène possible… … Wikipédia en Français
Homogeneous Charge Compression Ignition — Homogene Kompressionszündung (engl.: Homogeneous Charge Compression Ignition, abgekürzt: HCCI, oder Controlled Auto Ignition, abgekürzt CAI) bezeichnet das Konzept für einen Motor, bei dem die Verbrennung eines homogenen Gemisches gleichzeitig im … Deutsch Wikipedia
Compression ratio — For compression ratio in data compression, see data compression ratio. The compression ratio of an internal combustion engine or external combustion engine is a value that represents the ratio of the volume of its combustion chamber from its… … Wikipedia
ignition — A process which initiates the combustion of the compressed air/fuel mixture in the combustion chamber. In a spark ignition engine, the mixture is ignited by an electric spark; in a diesel engine, the self igniting mixture must be preheated by… … Dictionary of automotive terms
Ignition timing — in an internal combustion engine is the process of setting the time that a spark will occur in the combustion chamber (during the power stroke) relative to piston position and crankshaft angular velocity. Setting the correct ignition timing is… … Wikipedia